[232] Error: arity of predicate p_3_r is unknown
   ╭─[ C:\Users\Q\AppData\Local\Temp\nemo-verify-kx9o98la\program.rls:7:1 ]
   │
 7 │ @export p_3_r :- csv {}.
   │ ───────────┬───────────  
   │            ╰───────────── arity of predicate p_3_r is unknown
   │ 
   │ Note: arity of predicates in import/export statements must be known in advance.
───╯
